Machine for fastening keys to can covers



1 2 July 9 7 w. F. BUTLER MACHINE FOR FASTENING KEYS TO CAN COVERS Original Filed Dec. 13, 1923 '7 Sheets-Sheet 1 7t INVEN OR.

ATTORNEYS 7 Sheets-Sheet 2 w. F. BUTLER original Filed Dec. 15, 192:5

MACHINE FOR FASTENING KEYS TO CAN COVERS July 12, 1927.

INVEN OR.

ATTORNEYS July 12, 1927.

W. F. BUTLER MACHINE F'OR FASTENING KEYS T0 CAN COVERS Original Filed Dec.

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[N ENT R.

A TTORNE VS July 12,1927.

W. F. BUTLER MACHINE FOR FASTENING KEYS T0 CAN COVERS Original Filed 1 1923 7 Sheets-Sheet 4 ZLZZEIE,

. [NVJVTO BY OZML,

ATTORNEYS 1 July 927 w. F. BUTLER MACHINE FOR FASTENING KEYS TO CAN COVERS '7 Sheetg-Shggt- 5 Original Filed D60. 15, 1923 A TTORNE YS W. F. BUTLER MACHINE FOR FASTENING KEYS T0 CAN COVERS A TTORNE Y:

7 sheets-shut '6 Original Filed Dec. 13, 1923 llllll July 12 1927.

MACHINE FOR FASTENING KEYS TO CAN COVERS Original Filed Dec. 13, 1923 7 Sheets-Sheet 7 Z5 2? 14 f; a I

i" 2/3 2/8 o 7 i 21/ 1 I 67 I I Z9 7/ 4 v 66 6 Y 11 v G Hz 4 39 s I \33 S INVENT R. 2 046 6 M BY 74 M QZMAA W ATTORNEYS Patented July 12, 1927.

UNITED STATES PATENT OFFHQE.

WILLIAM F. BIl'TLER, OF HILLSIDE, NEW JERSEY, ASSIGNOR TO AMERICAN CAN COMPANY, OF NEW YORK, N. Y-, A CORPORATION OF NEW JERSEY.

MACHINE FOR FASTENING KEYS TO CAN COVERS.

Application filed December 13, 1923, Serial No. 680,379.

and covers and to form a bond therebetween I which will be of such strength as to withstand shocks received in shipment. or rough handling.

The machine includes means for accurately and rapidly assembling covers and keys; welding the keys to the tops of the covers; testing the strength of the weld; and thereafter separating the covers which pass the test from those which do not; and it is the main object of the invention to provide the various instrumentalities bywhich these operations are performed, the novelty residing in said instrumentalities-,individuall nations, as set forth in the appended claims.

of the inventionwill be. apparent as. it is better understood from the following de scription, which, taken in connection with the accompanying drawings, discloses a preferred embodiment thereof. 1

Referring to the drawings, 1

illustration; J

Fig. 2 isa side elevation of themachine; I 3 is an end elevation, looking toward the-right in Fig. 1, certain parts being omittedfor clearness of illustration. of certain.

others Fig. 4 is atransver se sectional'view, taken substantially along the section line 44 in Fig.1; I v

Fig. 5 is a detail'of the key feeding plate;

Fig. 6 is an enlarged partial section, taken on the broken section line 6-6 in Fig. 1 and illustrating the cover lifting mechanism;

Fig. 7 is a similarview, taken substantially on the broken section line 77 in Fig. l and. showing the welding station;

F lg; 8 is an enlarged vertical section, taken substantially on the section line 8-8 in Fig. 2 and showing the details of the testinp. mechanism;

Fig. 9 is an enlarged sectional view, taken 7 through the welding head;

. {49 mounted upon said extension 47. Fig. 10 3s a view taken substantially .orr

Renewed November 27, 1925.

the line 10l0 in Fig. 1 and showing in detail the cover sorting mechanism;

Fig. 11 is a sectional and plan view. showing the turret rotating mechanism and other elements at the driving end of the machine;

Fig. 12 is a bottom plan view of the turret; and

Fig. 13 is a detailof the automatic contact switch controlling the supply of current to the welding station.

The frame of the machine comprises a table 21, supported upon legs 22 .which are connected together by at-ie-rod 23, the various operating parts being supported by said table 21. I

A drive shaft 24 is journaled in bearings 25 and 26 extending laterally from the tabie 2Land is driven from any available source .of power by means of a belt (not shown) takand in, various combinations and sub-comb1f-.. said shaft 24 adjacent the bearing 25.

Numerous other objects-and advantages in over a pulley 27 carried at thecnd of A turret 28 is superimposed centrally upon th e table 21 and is rigidly mounted upon A disk 34 isfsecured byscrews 35. to the un- Figure 1' is atop plan view of amachine in which my invention. is embodied,pertainv parts being brokenaway for convenience in.

der side: of the turret 28 and serves :to space said turret a. suitable distance above the table 21.: Said disk fits uponthe shaft 29, which [latter has areduceclthreaded portion 36 extending-.through .thekturretand held to the latter by a nut 37. 7

Said turret 28 is rpt-ated by mechanism shown particularly in Figs. 1. 4- and11. A ratchet disk 38 is mounted on the shaft 29 in termediate .thebearings 31 and 32 and is adapted to. be intermittentlyrotated by means of a pawl 39 operating in notches 41 about the periphery of said disk. Said pawl 39 is mounted on a stud 42 and is spring pressed toward the disk 38 by means of a spring (not shown) which may be coiled upon said. stud 42. An arm 43 is freely mounted upon the shaft 29, above the ratchet disk 38, and has an extension 44 connected to the stud 42. A locking pawl 45 is pivoted at 46 to an extension 47 of the bracket and is provided with a. locking tooth 48 adapted to fit in a notch 41.in.which it is normally held. byemeans of a spring-pressed .pluggel: Maid pawl is pro ided with a roller 51 at the r -a 24.adjacentthe bearing end thereoi adapted to be acted upon by the beveled end 52 of the arm'43 to periodically release said disk for rotation.

The stud 42 is connected by a rod 53 with an arm 54 mounted upon a short vertical shaft 52} having bearings .56 and 57 in the table 21. Said shaft carries at its upper end an arm :38 inthe end of which is rotatably mounted a roller 5!), following a groove 61 in a cam 62 secured to the shaft By means of said arm 58 and cam 62, said sha'ft 55 is given a rocking motion and serves to operjate the pawl 39. Upon movement of said pawl in clockwise direction, with reference 'to' the disk 3 it rides out of a notch 41, by reason of the'beve'led inner edge (53 of said pawl, and engages in the adjacentinotch 411 This moveiiient also causes the arm 43 to strike the roller 51 on the locking pawl 45, thereby disengaging the tooth 48 against the tension of the s pring'acting upon the plunger $19; Upon the reverse motion of fthe pawl'39, the disk 38- is moved in coun'terelockwise direction a sufficient distance to move the,turret 28 from one station'to another. Upon release of the roller 51 by the arm 43, "the 'loc'king pawl 45 is again urged inwardly and 'is caused to engage in the appropriate notch'41' to hold the turret at an operating station. A' standard-brake 40 is providedat the-lower end of the turret shaft 29 to care. for any undne-"looseness. of thelat-ter which niiglit tentl'tolprevent accurate registration of the I 'rat chet' teeth with said notches 41 and thus interfere With the rotation qf the t irret'QQ- from one station to another at p 'operjtfime s. Secured tojt-he shaft 55 is in arm. 64 con:

necte'dat 67 to a slide titildif the.ct'iter feed ing mec a ism to Ibe 'now described (see F .1 ga n-d 11), {S d sl de 1' 8 is i guided within-a cover feedbiacket '69', whi'ch latter is provided with a cover agazi e the inner. end thereofi the covers: being adapted to be held in stacked fol-'ma'tion in saId'mag azine by a plurality of upwardly extending rods'72. One edg e of said, slide 1s',pr0-

vided with a cam recess73 and a"lever 74 is' pivoted at 75' to'the cover feed bracket 69 and carries at one end" a' r6ller'76 bearing against theside of the slide 68 and adapted;

to be: acted uponby the cam recess 73 to operate a knife blade 77carried at the opposite end of said 'lever 74 and adapted to successively cutout ends for delivery to the turret 28. t

Then theslide 68'is in the position shown in F ig. 1, with the roller 76 ,in the recess 173. the knife blade 77 isu'ithdraw'n, per- .6. This comprises a typically rcciprocahle rod 83, mounted in a sleeve 8. extending dowmvardly through the table 21 and har- .ing in the wall thereof a. slot through which extendsa stud projecting from the rod 83 and havingfreely mounted thereon a bearing block 87 engaged. by the bifurcated end '88 of a lever 89 pivoted atf9l to an arm 92 of abracket 93 secured to the side of the table 21. vSaid lever 89 is provided with an extension 94 carrying a roller 95 adapted to follow a cam. groove 96 in acam 97 ineunted on theshaft 24. A circular track 98 is positioned upon the table 21 beneath .the turret 28 and is adapted to support the covers after they are removed from the lift 79 by rotation ofs'a'id turret.

The neit'station beyond the cover lifting' 'station justdescribed is the' assembling station, at which ,the keys are placed upon the covers'in ,proper position 'for welding and the mechanis'nrat this station will now be described, attention-being called particularly to Figs. 15 4" and 5'. Q\ work tray 99 is secured to the-top of [the table at one side and is adapted to hold a supply of keys a'nd'covers .prior'to their beiigg positioned 'in-"their' respective magazines for feeding. Theco'ver magazine has already been described and the key magazine conipi'ises a? U-Shaped receptacle 101' secured to a 'bracket'102 elvte'nding'inwardly from the tray 99,:1 guard 4103 being secured to one side ofsaidre'r'tei'otacl'eand adapted to engage the heads of the keys 104C to preventla'teral displacement thereof. A feed plate 105' is" pivoted at 106 to a projection 10? upon said receptacle 101, Said plate is shown in detail 'in Fig. 5. from which it will appear that an aperture 108 of the shape of'th'e keys is provided therein and an aperture 109 is formed in the small end of the plate to receive the pivot 10 Upon the top of the turret 28. I provide spaced studs 111 and 112 adapted to contact with the opposite sides of the plate 105 to turn the latter upon its pivot in feeding the keys. as will now be described. Aliovo oar-h pocket in the turret there is formed an aperture 113 of such form and size as to permit the passage of a lrey therethrongh. a turret pocket approaching the assewm bling station, the stud 111 strikes the out- ,supplied. to the. electrodes 114 and 115) side of the plate 105, moving the ,latter ,tl1rougli a stepu-p transformer 141, which inwardly so thatthe aperture 108 therein, produces a high voltage for welding purrcgisters with the aperture 113 inthe turret. poses. From said transformer, the current A key having been positioned in the aper- I passes to the electrodes by means of copper ture 108,when the latter was in registration connections 142 and 121, the latter being. in with the bottom of the receptacle 101, it is the form of a bracket and having been hereautomatically deposited upon the top of the inbefore referred to as the means for holding cover when said apertures 108 and 113 are the electrode 119 in fixed position beneath brought into. registration. Further movethe path ofthe covers. The current is not ment of the turret causes the stud .112 to suppliedjo said electrodes continuously but engage the inner side ofthe'plate 105, re-, intermittently. bymeans of an automatic storing it to position for another key to be switch, illustrated particularly in F igs', 1 positioned in said aperture 108.. and'13. A cam143 is mounted on theflend Upon the next rotation of the turret, the of a driveshaft 24 and is adapted to actuate assembled cover and key are brought to an alever 144, carrying at its end a cam followidle station and upon further rotation to a ing roller145 and being pivoted at 146 to-an welding station, the mechanism of which is extention 147 of the bearing 26. Said roller perhaps best shown in Figs. 1, 2,7, and 9. is held in contact .with the cam by means of .Anupper electrode 1l4'is secured by means a coil spring (not shown) upon the pivot of a set .screw 110 and anadjustingscrew 146. A bell crank 148, secured to the pivot in a sleeve 118 mounted in a head- 1 14 146, has current conducting: extentions 149 in the end of an arm 115. said sleeve is and 151, carrying contact points 152 and 1553 held in place by lock nuts 116,and 117*and is eadapted to bea periodically moved into consuitably insulated from the .head L14', a's in- Y ,tact respectively with a plate 154 and a con- ,rdicated at= A'lower electrode 119 is po-, :tact point 155, The,plate=154 is attached to sitioned beneath-the turret, being secured in, and insulated fromtheframe and the cona bracket 121 by -means of a locking 'screwgtacts just referred to .areestablished when 122.;Said lower-electrode is adapted :to con: the roller iszpermitted: to enter a cut-out tact withthebottompf-the cover; and the,;'1'56 in said cam; 143. A set screw 157 in the I upper-electrode isadapted to be periodically dower extension the bell crank 148 is emlowered-to COIltflCt WlllhithIG- key positioned, ployed to control the amount of divergence upon the topof said covertocause a flow between the lever 144 and the upper extenof high voltage electricity-although;;'saidysion ;of said bellcrank, therelrvadjusting the cover a d-:key, toaweld them; tqgetherlz,=; The c nta t, points, The plate 154 and con ta ct arm; 115 is reciprocatedfby means; oiga; lever 155,,a're included .in ani electric 1 circuit by 123 pivoted at;124 toaaprojectiorr l2fizof thepgl neansnoflwires 158 and159 andthe contact ear ng 26l-and=ghaving am extension,-n126,, oints ;l 2ia d;153';arec0nnected with the carrying at itsf'end-acamefollowing eroller; transformer; 141Hin any desired manner-. .It

I p sed in afia Hg 0Qv0U128flOi 2ecam will ,besobviousfthatby the mechanism'just @129 mounted on the drive: shafit'g2 4wiThe deseribed,- -high voltage current isintermit- 'levera115 is;of1 channele construction and is tentlyifedsto the, electrodes 114 and 119 to pivoted upon-thepivot v124 of the lever- 123, accomplish-,theiwelding action.

\vhich' latter ahasits forward'end disposedin ,Afier the keys have thus beenwelded to I u 1 -thei channel,- onthemnder" side. vof said lever. the covers; the strength of the bond is tested l 1l5:.--Oscillation lthe:levenw123maccom1 by mechanism perhaps .--best shown 11'! Figs.

plislied-by the-rotation of the'cam :129,'rai'ses 1.3. 311N138, t'hisoperation being performed-at and lowers the lever-.115 and it will be ob-i the-station, next=beyond the welding. station served that l'have piiov'ided' azlods'e connec in the rotation of the.turret-.1 A bracket 161 ,tion between said :levers by means; ofaistud: (seeiFigg3) {is mounted at. the side of the z 131 extending upwardlyifromith end-ofithei table, and provides a, bearing 162 for a short lever 123 and through an ape rture 132 in the vertical shaft'163, carrying at its lower end a top of the lever 115,"- SaIdflStud-hav in'g a gear 164 meshing with a gear 165-on the spring 133 mounted thereonbetween la loose. shaft. 24,-said shaft- 163 having mounted 1 collar 134 and a nut 135.- Forathe purpose thereon. at its upper'end; a ge'ar 166 meshing of limiting -downwardmovementmf the with a beveled pinion 167v on the outer end electrode 114, I provide an adjustingscrew of a horizontal shaft 168.-having'bearings 169 I36 extending through the lever 115 near its and 171 projected upwardly from the outer end and adapted to contact'with a probracket 161. At the inner end of'said shaft jection 137 on a stop bracket 138'secured'to -168;is another beveled pinion 172, meshing the frame by means of"screws-=139. The with a gear173 keyed'to aispindle'sleeve 174 spring connection between the levers 123 and mounted "in a "projection 175 upon the 115 serves to-take up any-overthrow of the bracket 161. Mounted within said sleeve is 7 ram 129after-the'adjusting'screw 136 con- 21 spindle 176. i which extends upwardly tacts'with the stop bracket The current is through an overhanging'extension 177 of the bearing 17] formed integrally with the bra ket 161. A' short sleeve 17 'is mounted npon'the lower end of the spindle 176 and a key-engaging member 179 is threaded into said sleeve. as shown in Fig. 8. A retaining washer'lsl is secured to the lower end of the pindle 176 by means of a screw 182 and serves to hold the parts in assembled relationship. A collar 183' is pinned'to the spindle 176'andis-held against rotation by means of projections 184 slidable upon a fixed guide 185formed integrally with the bracket extension 177. A sprin'g'186 ismounted upon the spindle between said collar 183 and a loose collar 18? positioned above the sleeve I74 and tends'to yieldingly hold the latter in operative position, as will "hereinafter appear.

The spindle 176 is adapted to beverticallyreciproeated to. periodically move 'the key engaging member 179 into engagement with a key.'thisbeing accomplished hy mean-sot a link .188,'connected at 189 to the 'c'ollar'183 and at 191 to a lever l92secured to a shaft'1 93 -'mounted in a projecting bearing'ltl lintegralwitb'the bracket '161. The shaft 193 isadapted'to'be rocked by means of a lerer 195 connected by a link 196 7) tea stud 197'by which the roller 127 is secured to the lever extension 126. The

spindle 176 isthus actuated by the'cam 129,

which also operates the welding head (see Fig. '7).

Upon downward reciprocationof said spindle 176, a key 104cm acover 78 is engaged ina slot 199 in the member'179,"w'liic'h' member bears against the -top of the cover, "holding it tightly against-arubber-pad} 2'01 zinset in the track 98, which atthis point is slightly'below the level-of theprecetling-portions thereof. The sleeve fields-continuous l rotated. as' 'hereinbefore described, and

lends to rotate the short sleeve 178- through the medium of a friction disk' 202 inter posed between said sleeves. If t-hekefbel secured tightly enough to overcome the friction of said disk, the sleeve 1-78-andke y-engaging-member 179*remain-stationary and slippage ccursbetween said sleeves 1-74 and 178. It. however. the key be insufficiently secure hthe friction of the'disk 202"\vill'=not lie overcome and the rotation of the 'key-' engaging member 179, with the sl'eeve'178 in which it is secured and the driven-sleeve '174. will dislodge the key. A friction disk fi -3 is interposed between the retaining washer 181 and'the sleeve -178,-but isof con siderahly less areathan the/disk 202, so'tliat rlil page ill occur at this point rather-than upon said disk-202, unless the key-engaging member 179 and sleeve 178 are restrained from movement by the'bond between-the key NH and cortex-'78. It should be noted,-also, that the area of the friction surface-of the pad 201 i -considerniily in excess of'that Of the disk 2 2, so that the cover will be held against rotation during the testing action. 'A limiting collar 204-is provided 'on'the upperend of the spindle 176 to limit the downward movement thereof.

After the covers pass the testing station, they are deposited between guideways 205 and 206 and are propelled toward the end of a machine shown at the left in Fig. 1 by means of a'feed ehain'207having flights S thereon in such spaced relationship that one of said flights engages each cover as it is delivered rom the turret, due to the synchronized operation of said turret and'feed chain. Said ehain'20T is driven by means -ofa sprocket "2'09, shownclearly in Fig. 4.

Said sprocket-is mounted upon a short shaft- 2-1l ournaled in a'bearing'212 integral with theaable 31 and carrying at its outer end a beveled pinion 213 meshing with a beveled gear 214 on the shaft-24. At the end of the machine. said chain extends over spaced sprockets 215 and 216 mounted-on'short idle studs 21?, journaled=in"bearings 218 integral with the frame.

For the purpose of sorting the covers which have"passe'd the weld 'test' from those which'hare not, I employ a sm wheel 219 mounted upon--ashort"shaft'221 havingbeariligs in a bracket 222' secured'by means of screws 223 to the top-of the table 21 (see 1, 4; and'lO). A-Geneva gear 224 is also "mounted upon the shaft 221 and is adapted-to be dnven by a Geneva pinion 225 mountedmna-stud 226 alsoihaving bearings in the bracket 222. Said 'stud'is driven by means ofa chain =227,=taliingovera sprocket thereonand a" sprocket 228 on the shaft 24. The star"wheel 219 and'the' feed chain"207 are synchronized'zso t'hat a prong on said "wheel' passes above each cover asit'is prolielledalongthe t1acks' 2Q5 =and- 2O6. If a key 'be present upon' the cover, it will be .stmck by one 0f said prongs "and the cover -dire'cted away fro'm' said-conveyer 207 into un' inclined :ehute' 22 9 projecting laterally from the frame. I i, lhowever, no key be presentyor it is loose -upon"the 'top of the cover,'thecover -will"pass beneath said star wheel 'and 'berdischargetl ina suitable receptacle at ithe enddf tlie' machine.

"Itfi's thought that the invention'and many of' its attendant advantages will' be understood froin the foregoing description, and it'will be apparentthat-wariouschanges may be made in the form, construction and ar- -rangement"of the parts without departing from the spirita'nd scope of the invention, or sacrificing-all of its material advantages, "the formhereinbefore described being merelly a preferred embodiment thereof.

I claim:

'-1. A machine for attaching keys to can covers, comprising in-combin'a-tion a turret, means for"positioning can-covers in pockets of said turret, means for depositing keys upon the top of said covers at a station in the rotation of the turret, means for weld ngthe keys to the covers. and means for testing the strength of the weld.

2. A machine for attaching keys to'can covers, comprising in combination a turret, means for positioning can coi-ers .in pockets of said turret, means" for depositing'keys upon the top of'said'covers at a'station in the rotation of, the turret, means for welding the keys to the covers, means for testing the strength of the weld, "land means for sorting the covers in accordance with the weld test.

3. A machine for attaching keys to can covers, comprising in'combination means for weldin opening keys to the covers," and means i 01 automatically testing the strength of thei'we'ld 1 4. A mac'hinefor attaching keys to can c0vers,-c0mprising in combination means for welding opening keys to-thecovers,

means for automatically testing the strength of the weld, and; means-ionautomaticallysorting the covers in accordance with the eId It eSt. I H g: 4

5. A machine for gattaching keys to can covers; :1 comprising C in combination means for automatically assembling-the keys and.

covers, means for securing said keys' and 00v- 1 ers -together,= and means-{ion testing the stren th 'ofthe securing bondw "P 3. machine ifor'attaching' keys to ca covers comprisingin combination means for automatically assembling'cthe keys and co?- ers, means for securingsaid''keysand covers together; means for tes ting the strength; of:- the securing ibond, A and. meansv for sorting the covers whichwhichJdo-noth 7. A machine for;

pass the test f from" those attaching keys to i an.

covers, comprising in; combination means for welding opening keysto thecovers, and means for automaticallytestingthe strength of the weld, said last-mentioned means com; prising. a rotatable ikeyengaging' c-member is ofieredvby thekeyjltorotation oisaid engaging e r 8. A machine for. attaching keysto can covers, comprising in. combination means for bondin opening keys .to :the cover, and means for automaticallytesting the strength of the bond; said last-mentioned means comprising a rptatable key-engaging member mounted to permit slippage of the rotating mechanism when predetermined resistance is offered by the key to rotation of said engagin member. V i

9. K machine for attaching keys to can covers, comprising in combination means for weldingopening keys to the covers, means for automatically testing the strength of the means for sorting the covers in accordance with the weld test, said sorting means comprising a rotatable member operable above the path of the covers beyond the testing station and adapted to strike the keys and deflect the coversfrom said path if said keys be-securely welded thereto.

11. A machine for attaching keys to can covers, comprising means for forming a securing bond between a key and cover, means for testing the strength of said bond, and

means forsorting the.-coversi n accordance with the strength of theibond', said means comprising a rotatable member operable above the path of the covers beyond thetesting station and adapted tostrike' the keys and deflect the covers from said path it said keys be securely weldedthereto.

127A machine for attaching keys to can covers, comprising a turret having intermittent rotation, means for automatically assembling the key's'fland covers in pockets of said Uturret,'spaced electrodes adapted to contact respectively with the keys and covers when they arrive at 'a'welding station, and means for supplying high Voltage current to said selectrodes, said means including an "inter- --.mi ttently operable automatic switch synchroz-nizedfwith the operation of the'turretj 1 3.fA machinefor attaching keys to can covers, co mprising' a feed turret,imeans' for positioning covers in pockets on the under side ogf sa d turret, a key magazine above the turret, a pivoted feed plate operable durmountedtopermit slippage of the rotating mechanism ewhen Lpredetermined resistance I ing rotation of the turret to' transfer keys from said magazine" and deposit them through apertures in the turret onto the tops keys to the covers. v

a of thecovers,@and means for securing the 1 4. A machine for attaching opening keys to can ends, comprising, in combination, electrodes for welding said parts together, and automatic means for feeding the ends to the welding station, and means for placing the keys loosely at a predetermined point on said ends successively.

15. A machine for attaching opening keys to can ends, comprising in combination, elec trodes for welding said parts together, means for automatically delivering the keys to the welding station in position for welding to said parts are carried to therweldingnstation a stack to theweldi'ng sta-tion, and means for antomaticallycfeedingkeys from a stacli and placing them inflposition for welding upon saidfiends', and .means for.keeping, the key. in predetermined'position on-Ihecan end while a-ndthe ,key is positioned in line with the electrode whiclris to contact with',it.

18." A machine for attachingopeningkeys to can ends, comprising.- in combination-,elo.

V trodes for weldingsaid' partstogether, and

means forautomatically feedingithekeys to the welding station forattachment to apositionedend, said means including, conveyor ineansand acut-out devicefor movingthe keys from a-stack.to position for transfer by said'convey or.means tosaid 'weldingstation and means for controlling the position of 'thekey. on 4 thecamendlwhil. it is being carried to sairljelctrodes.

19; A machinelfor attachingopeningzkeys to can. ends, comprising, in combination, electrodes fonweldingsaidfparts together, feeding means for th'e e1,1ds, .andieedmg ;means for the keys, said. last-mentioned means com--.

prism ;a .cut-rontzrdvice .formoving theikeysindividually, froma.staclinandlppsitionihg; them upontlie. ends;as. tlie. 1atte1:.arermoved' by saidcndi feeding means. toeth'ea welding station. andJaILapentured planer. properly locating the, lieysrrelativeuto. saidielectrods.

QOLAimachine forattach'ingppening keys.

to can ends,. comprising inrcombination,

electrodes 2 for: welding, saidlparts together,

and; feeding means, includin a conveyor;

adaptedto receiizeand transferboth .theends.

and keys toth'e welding station, saidieeding means operating to superposertb'e key eta.

predetermined .position. on the A can .end.-'

21. Amachinejor attachiligppeningkeys to can ends, compris'ing, in. combination, electrodes for welding, said parts. together. and feeding; means, includinga" conveyor adapted to receive and. transfer bothlthe ends and keys to the welding station, means for automatically delivering, the .endstocsaid conveyor, andenieans for. automatically de- Iivering the keys thereto .includingapertures in saidfconveyon.

22, A machine for attaching opening keys to can ends, comprising, in combination, electrodes for welding said partstogcther, andfeedingmeans, including a-con- 'eyor adapted to receive and transfer both the ends and keys to the \veldingstation, means for automatically delivering the ends To to said conveyor and means for automatically delivering; the keys thereto,.the ends and keys being arranged in.said conveyor in desiredvrelat-ionship for. welding.

23; Aimachjne for-attaching, keys to-can 75 ends, having, in combination, a .can ,endfsnps port and fap erturedikey positioning member, and. opposed electrodes. having arelative movement. for. welding a key partheld. in. said'positioning member to a can endsup; ported on said support.

24.: A. machinent'orattaching keys to can. ends, having in combination, meansiortsup; portmgct-he.said,-p,arts=tcx betjoined, andielecr trodes for welding the said parts;together.

25. .The process-oi-attachin-g ppening keys to canvends; which. consists in arranging; an .untinned'key upon a,--.t innedcan: end,=. and welding.- 5a -.rounded; ROFL-10H; 0t 4 the key, to the-flaL-surfaceof theaend; 9U

26. A machine. for; welding; articlesim. assembled relation, comprising, in combiner-- tion, a turret,-,.meanssfortpositioningparticles in pockets :of said; turret/,- meansz-forideposite ing-.. other, articles adjacent said; first'mens t-ioned artieleswin; said; turretuand; at: a .stas tion .in the srotation thereof zmdzin-ancircular; path leading to the .-welding 'means;. means for ;w elding;saidmticlesztogethe-r and: in 'predetermined aelation zatxanothemstation in the rotatioIn-ofittheaatuvretz.

27. A; maehinesforiwelding -articles in es-- sembled: relation-,1 corn: rising, .in'-:com"bin'a.-- tionn aaturret; meansif mpositioning articles-= in pooketszofisaidstnrretemeansir deposit ing other articles adjacent saidfirst-'men' tioned articles im said t-unet a-nd a-t a station irr=the-rotattiomthereof, lmeans -'fo r-' welding-"said articles together, testing- *the strength of thewveldz- 285 A-maeliinwfor'weld'in'g articlsdn assembld relation, comprising; in-- combiria tion, a-turret; means-for positioning-arthcles inipock'ets'of said-turret; means-for 'd- 11 positing oth 'er articles adjacent said first mentioned articlesin said turret-tandat astation, in'the' rotation" thereof, means "for welding said articles together; means for testing thest-ren'gthof the weldj' and means12o,

for-sorting pairs 'of'f'said a rticle's' in accordance with the weld test;

29; A. machine forwelding articles; in assembled relation, comprising, in combination, a,turret, means forpositioning-arti'cles 125.

in pockets of said turret, means for deposit ing other articles-adjacent .said-'first-mentioned articles'in said. turret ,andat a stationin the rotatiomthereof, means for weldin said articles together; means engaging and: means for 1 m said articles for determining the strength of the Weld, and means for sorting out sets of said articles not properly Welded.

30. An automatic machine for Welding 5 keys to can parts, having in combination a turret having on its under side seats for the can parts and apertures for the keys above said seats, means for holding the can parts in said seats, mechanism for turning said turret, electrodes adapted to Contact with the can parts and keys, and means for causing said contact when said turret is in a predetermined position.

WILLIAM F. BUTLER. 

